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  • Writer's pictureBrent Payne

Mastering ARIA for Web Accessibility: Ensuring Valid Attribute Values


Welcome to Loud Interactive's deep dive into ARIA (Accessible Rich Internet Applications) attributes and the significance of maintaining valid values. In the realm of web accessibility, precision is key. Today, we explore how to fine-tune your ARIA attributes to ensure a seamless and inclusive web experience.

Understanding ARIA Validity

ARIA attributes empower web developers to make their content more accessible to people with disabilities. However, the effectiveness of these attributes hinges on their values being valid and correctly applied.

How to Ensure ARIA Attribute Validity

Ensuring the validity of ARIA attributes involves a few critical steps:

  • Correct Spelling and Application: Each attribute value must be correctly spelled and appropriate for the attribute in question.

  • Adhering to Allowed Values: Many ARIA attributes accept a finite set of values. It's crucial to use only these allowed values to ensure the intended accessibility function is performed.

  • Understanding Value Types: ARIA attributes can accept different types of values, including true/false, tristate, ID references, and more. Knowing the context and applying the correct type is essential for functionality.

Why Correct ARIA Values Matter

Properly utilized ARIA attributes significantly enhance the user experience for those relying on assistive technologies. Incorrect values can lead to confusion, content inaccessibility, and a breakdown in communication between the web content and the user's technology.

Rule Description

ARIA attributes, identified by the prefix aria-, must contain valid, correctly spelled values that align with the intended accessibility function. This rule ensures that web content is accessible and functional for all users.

The Algorithm Simplified

Our evaluation process checks all elements with ARIA attributes to verify that the attribute values are valid, enhancing the content's accessibility and interaction with assistive technologies.

Resources for ARIA Best Practices

Loud Interactive is committed to fostering an accessible digital environment. Here are resources to further your understanding and implementation of ARIA:

  • Deque University: Offers comprehensive courses on ARIA roles and properties (subscription required).

  • GitHub Contribution: Engage with the community improving accessibility by contributing to the axe-core project.

Your Feedback Matters

We're dedicated to continuous improvement. Was this guide helpful to you? Let us know how we can enhance our resources to better serve your needs.

Wrapping Up

Ensuring ARIA attributes have valid values is more than a best practice—it's a cornerstone of web accessibility. By adhering to these guidelines, developers can create more inclusive digital experiences for everyone.


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